Caracterização E Entraves Do Sistema De Produçãocom Bracatinga Na Região Metropolitana De Curitiba

Abstract

ResumoO cultivo da bracatinga (Mimosa scabrella Bentham) com finalidade energética existe há mais de 100 anos. Atividade típica da pequena propriedade rural, é cultivada com base na regeneração natural desde a segunda rotação. A madeira é valiosa, com características para uso em várias alternativas industriais, especialmente pela movelaria. Após expansão da área cultivada durante muitos anos, atualmente ocorre redução gradual dessa área plantada. Este estudo buscou identificar as causas de redução dos plantios e outros entraves para o produtor de bracatinga. Em paralelo, procurou definir uma proposta de incremento do manejo dos plantios de bracatinga, enfatizando o uso da madeira pela indústria de móveis. Faz-se análise do produtor, da posse das terras e da disponibilidade de mão de obra, do manejo dos plantios e a remuneração da madeira, aliada ao confronto com as restrições pelos órgãos ambientais, carências organizacionais dos produtores e impedimentos para a atividade estabelecida pela sociedade urbana. Os dados do estudo apontam para uma realidade em que a cadeia produtiva da bracatinga será extinta a curto prazo caso seja mantida a atual intervenção do serviço de fiscalização com rígido enfoque ambientalista, aliado ao desconhecimento da realidade rural na atual ótica da sociedade urbana. Palavras-chave: Silvicultura da bracatinga; posse da terra; área média; restrições ambientais; organização da produção. Abstract Caracterization and impediments for bracatinga production system in Curitiba's MetropolitanRegion. Bracatinga (Mimosa scabrella Bentham) cultivation for energetic purposes subsists to more than one hundred years. Typical activity in small rural properties, it is cultivated based on natural regeneration after second rotation. The wood is valuable, and it has characteristics for many alternatives of industrials uses, especially in furniture industry. After many years of expansion of the cultivated area, presently there is a gradual reduction on bracatinga's cultivation area. This research aims to identify causes of such plantings reduction and other impediments to bracatinga's producers, it also aims to define one proposal to bracatinga plantation development focusingits wood use in furniture industry. Therefore, it analyses bracatinga's producers, land ownerships and manual work accessibility, plantation managements and wood remuneration, associated to their confront against environmental public services obstructions, organizational needs of bracatinga`s producers and opposition to the rural activity that is established by urban society. The data analyzed points to a reality in which bracatinga's cultivation chain will be extinguished in short time whether it is maintained the actual intervention of inspection services with rigid environmental limitations, associated to the acknowledge of rural reality by the urban society.

THE USE OF HYDROGEL COMBINED WITH APPROPRIATE SUBSTRATE AND FERTILIZER IMPROVE QUALITY AND GROWTH PERFORMANCE OF Mimosa scabrella BENTH. SEEDLINGS

“…is a pioneer tree with short life cycle, which occurs mainly in the ombrophilous mixed forests in southern Brazil (southern distribution), but also in some areas of the Southeast region. In the country, it is popularly known as bracatinga, occurring in dense natural agglomerates and almost pure (CARPANEZZI et al, 1988;MAZUCHOWSKI et al, 2014). In the southern region, it is naturally distributed in a continuous area between 23º50' and 29º40, from southern São Paulo to Rio Grande do Sul.…”

Biometric and Physiological Quality of Bracatinga Seeds From Different Mother Trees

“…Specie of rapid growth, average annual increment of approximately 24 m 3 /ha/year (Sánchez et al, 2010) and which can reach 18 m in height, with a shaft of up to 40 cm in diameter at breast height (Carvalho, 2003). Recently, this species has been prioritized in broad spectrum research in southern Brazil, due to its economic importance and relevant energy capacity, similar, or even superior, that of some species of the genera Eucalyptus (Mazuchowski & Angelo, 2012;Mazuchowski et al, 2014;Friederichs et al, 2015;Menegatti et al, 2017).…”